ASB ALN1280

plerowTM ALN1280
Internally Matched LNA Module
Features
Description
· S21 = 32.2 dB @ 1270 MHz
= 31.8 dB @ 1290 MHz
· NF of 0.7 dB over frequency
· Unconditionally Stable
· Single 5V Supply
· High OIP3 @ Low Current
The plerowTM ALN-series is the compactly designed surface-mount
module for the use of the LNA with or without the following gain blocks in
the infrastructure equipment of the mobile wireless (CDMA, GSM, PCS,
PHS, WCDMA, DMB, WLAN, WiBro, WiMAX), GPS, satellite communication terminals, CATV and so on. It has an exceptional performance of
low noise figure, high gain, high OIP3, and low bias current. The stability
factor is always kept more than unity over the application band in order
to ensure its unconditionally stable implementation to the application
system environment. The surface-mount module package including the
completed matching circuit and other components necessary just in case
allows very simple and convenient implementation onto the system
board in mass production level.
Specifications (in Production)
Typ. @ T = 25°C, Vs = 5 V, Freq. =1280 MHz, Zo.sys = 50 ohm
Parameter
Unit
Frequency Range
Min
MHz
1270
Gain
dB
31
Gain Flatness
dB
Noise Figure
Output IP3
S11 / S22
Typ
dBm
(2)
32
37
± 0.2
± 0.3
0.7
0.75
dBm
(3)
Website: www.asb.co.kr
E-mail: sales[email protected]
Tel: (82) 42-528-7223
Fax: (82) 42-528-7222
-18 / -10
17
18
µsec
-
Supply Current
mA
100
Supply Voltage
V
5
Impedance
Ω
50
Switching Time
More Information
38
dB
Output P1dB
Max
1290
dB
(1)
2-stage Single Type
Specifications
ASB Inc., 4th Fl. Venture Town
Bldg., 367-17 Goijeong-Dong,
Seo-Gu, Daejon 302-716, Korea
120
Max. RF Input Power
dBm
C.W 29 ~ 31 (before fail)
Package Type & Size
mm
Surface Mount Type, 13Wx13Lx3.8H
Operating temperature is -40°C to +85°C.
1) OIP3 is measured with two tones at an output power of 10 dBm / tone separated by 1 MHz.
2) S11/S22 (max) is the worst value within the frequency band.
3) Switching time means the time that takes for output power to get stabilized to its final level after switching DC voltage from 0 V to VS.
Outline Drawing (Unit: mm)
plerow
ALN1280
ASB Inc.
(Top View)
(Bottom View)
Pin Number
Function
3
RF In
8
RF Out
10
+Vcc
Others
Ground
Note: 1. The number and size of ground via holes in
a circuit board is critical for thermal RF
grounding considerations.
2. We recommend that the ground via holes be
placed on the bottom of all ground pins for
better RF and thermal performance, as
shown in the drawing at the left side.
Solder Stencil Area
(Side View)
Ø0.4 plated thru holes to ground plane
(Recommended Footprint)
1/3
www.asb.co.kr
November 2008
plerowTM ALN1280
Internally Matched LNA Module
S-parameters
20
34
10
Typical Performance
(Measured)
33
1270~1290
0
32
S22
-10
-20
30
S11
-30
-40
+5 V
S12
-50
-60
1270
31
S21 [dB]
S11, S22, S12 [dB]
S21
29
28
27
1275
1280
1285
26
1290
Frequency [MHz]
Stability Factor (K)
Noise Figure
10
40
9
S21
20
8
10
7
0
6
S22
5
-10
4
-20
S11
-30
3
2
-40
-50
-60
Stability Factor K
S - Parameter [dB]
30
1
S12
0
500
1000
1500
2000
2500
3000
0
3500
Frequency [MHz]
OIP3
2/3
P1dB
www.asb.co.kr
November 2008
plerowTM ALN1280
Internally Matched LNA Module
Application Circuit
V DC
+
-
Tantal
Capacitor
IN
OUT
ALN
C1
C2
1) The tantal capacitor is optional and for bypassing the AC noise introduced from the DC supply.
The capacitance value may be determined by customer’s DC supply status.
2) So-called DC blocking capacitors are always necessarily placed at the input and output port
for allowing only the RF signal to pass and blocking the DC component in the signal. The DC
blocking capacitors are included inside the LNA module. Therefore, C1 & C2 capacitors may
not be necessary, but can be added just in case that the customer wants. The value of C1 &
C2 is determined by considering the application frequency.
Recommended Soldering Reflow Process
Evaluation Board Layout
+Vcc
20~40 sec
260°C
Ramp-up
(3˚C/sec)
Ramp-down
(6°C/sec)
OUT
IN
200°C
150°C
60~180 sec
Size 25 x 25mm
(for ALN Series – 13x13mm)
3/3
www.asb.co.kr
November 2008